<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>后盾人</title>
  </head>
  <body></body>
  <script>
    setTimeout(() => {
      console.log("定时器");
    }, 0);
    Promise.resolve().then(value => {
      console.log("Promise");
    });
    console.log("后盾人");
  </script>
</html>
